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Related Experiment Videos

Accuracy of mechanical torque-limiting devices for implants.

Jon P Standlee1, Angelo A Caputo, Ming-ya J Chwu

  • 1Division of Restorative Dentistry, University of California Los Angeles School of Dentistry, Center for the Health Sciences, 90095, USA. standleejnm@hotmail.com

The International Journal of Oral & Maxillofacial Implants
|April 18, 2002
PubMed
Summary

The Straumann ITI and DynaTorq ITL mechanical torque wrenches accurately delivered torque within 10% of their targets. The Nobel Biocare device showed significant deviations, highlighting the importance of accurate torque control in dental implant procedures.

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Area of Science:

  • Dental Implantology
  • Biomaterials Engineering
  • Mechanical Engineering

Background:

  • Accurate torque application is crucial for the stability and longevity of dental implant restorations.
  • Mechanical torque wrenches are commonly used to ensure precise tightening of abutment screws.

Purpose of the Study:

  • To evaluate the accuracy of three mechanical torque-limiting devices: Nobel Biocare, Straumann ITI, and DynaTorq ITL.
  • To determine the consistency and reliability of torque output from these devices.

Main Methods:

  • Torque outputs were measured using a specialized setup on an Instron test machine.
  • Devices were oriented to produce a pure torsion effect during testing.

Main Results:

Related Experiment Videos

  • The Nobel Biocare torque controller exhibited significant deviations between individual units and target torque levels.
  • The Straumann ITI and DynaTorq ITL devices demonstrated mean torque values within 10% of their target settings.

    • Conclusions:

    • The Straumann ITI and DynaTorq ITL devices provide consistent torque output near their target values.
    • Accurate torque control is essential for achieving optimal preload in dental implant abutment screw fixation.
    • Variability in torque output among individual devices necessitates careful selection and verification.